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Assessment Of Asymmetric Flight On Solar Uas, Eric Belfield 2016 California Polytechnic State University, San Luis Obispo

Assessment Of Asymmetric Flight On Solar Uas, Eric Belfield

Master's Theses and Project Reports

An investigation was conducted into the feasibility of using an unconventional flight technique, asymmetric flight, to improve overall efficiency of solar aircraft. In this study, asymmetric flight is defined as steady level flight in a non-wings-level state in- tended to improve solar incidence angle. By manipulating aircraft orientation through roll angle, solar energy collection is improved but aerodynamic efficiency is worsened due to the introduction of additional trim drag. A point performance model was devel- oped to investigate the trade-off between improvement in solar energy collection and additional drag associated with asymmetric flight. A mission model with a focus on ...


Dji S-1000 Spreading Wings Octocopter: Determination Of Rotor Downwash Slipstream Size, Jonathan Lemieux 2016 University of Tennessee, Knoxville

Dji S-1000 Spreading Wings Octocopter: Determination Of Rotor Downwash Slipstream Size, Jonathan Lemieux

Masters Theses

The DJI S-1000 Spreading Wings octocopter rotor downwash slipstream area of influence was measured in axial climb conditions and in straight level flight. These data were gathered using a simple apparatus of distributed anemometers and a custom made boom affixed to the drone. Straight level flight tests incurred autopilot oscillations that rendered the data gathering and analysis challenging. The best quality data was acquired during the axial climb flight tests. The axial climbs were conducted in calm winds. It was determined that the axial climbs under these conditions displaced the rotor slipstream 9 ± 2.5 cm to the rear of ...


2015-2016 Eraudb Aiaa Design/Build/Fly Technical Report, Trevor W. Perrott 2016 Embry-Riddle Aeronautical University

2015-2016 Eraudb Aiaa Design/Build/Fly Technical Report, Trevor W. Perrott

Student Works

The economic potential of small unmanned aerial vehicles (SUAVs) has been well documented and reported. According to the Association for Unmanned Vehicle Systems International (AUVSI), there is an associated economic impact from the growth of the UAV industry. The goal of the American Institute of Aeronautics and Astronautics Design/Build/Fly Competition Research Program (AIAA DBF CRP) is to investigate design and manufacturing methods for application to SUAVs within the scope of the AIAA DBF Competition.

Students were engaged in the application of aerospace engineering knowledge for the production of a dual-aircraft system. Through the use of Computational Fluid Dynamics ...


Development Of A "Multi-Cut" Payload For Use In Stratospheric Ballooning Missions, James Flaten, Joey Habeck, Noah Biniek, Steven Smeaton, Austin Langford, Jordan Diers, Isaac Krieger 2016 U of MN - Twin Cities / MN Space Grant

Development Of A "Multi-Cut" Payload For Use In Stratospheric Ballooning Missions, James Flaten, Joey Habeck, Noah Biniek, Steven Smeaton, Austin Langford, Jordan Diers, Isaac Krieger

2016 Academic High Altitude Conference

The ability to cut strings (AKA lines) during stratospheric ballooning missions has a wide variety of uses including, but not limited to, (a) flight termination (i.e. cutting payloads away from the main balloon), (b) cutting away excess lift balloon(s) to slow ascent rate (and possibly achieve float), (c) cutting away ballast weights to slow descent rate or increase ascent rate, (d) cutting away burst balloon(s) on descent to avoid parachute entanglement, and (e) cutting away payloads which are intended to return to the ground independently, for experimental purposes. We report on the development of a “multi-cut” payload ...


Risk-Based Approach To Assessment Of Advanced Technologies For Conceptual Design, Adipratnia Asmady 2016 California Polytechnic State University - San Luis Obispo

Risk-Based Approach To Assessment Of Advanced Technologies For Conceptual Design, Adipratnia Asmady

Master's Theses and Project Reports

The conceptual design phase of an aerospace system development program is typically characterized by short duration and relatively limited resources, yet design decisions are made that have critical implications on program risk. To address the more aggressive requirements, one of these decisions is the selection of advanced technologies. System developers need to assess advanced technologies early on, but are faced with uncertainties surrounding the potential net benefits. The concept introduced in this study is uncertainty characterization as a way to better understand the associated risk. A framework was developed to guide the interaction between the technology developer and the system ...


Tilt-Rotor Drone, Benjamin Stone, Zachary Crandall 2016 California Polytechnic State University, San Luis Obispo

Tilt-Rotor Drone, Benjamin Stone, Zachary Crandall

Electrical Engineering

A drone is defined a "an unmanned aircraft that can fly autonomously[2]." In the year 2016, there exist many applications for small scale drones. Drones, having had primarily military applications, now have use in hobby robotics, photography, and even in surveying. But drones have not yet been perfected and still have room for much improvement. Several problems with drones come in the form of battery life, stability, and size. Large drones can fit many sensors and probes, but are heavy and have less flight time. For autonomous drones, stability can be an issue even though there exist many stable ...


Uav As A Service: Providing On-Demand Access And On-The-Fly Retasking Of Multi-Tenant Uavs Using Cloud Services, Justin Yapp 2016 Embry-Riddle Aeronautical University

Uav As A Service: Providing On-Demand Access And On-The-Fly Retasking Of Multi-Tenant Uavs Using Cloud Services, Justin Yapp

Dissertations and Theses

As commercial roles for Unmanned Aerial Vehicles (UAVs) become more well-defined and demand for the services provided by them increases, UAVs rely more on new cloud computing services and co-operative coordination to provide mission planning, control, tracking and data processing. We present UAV as a Service (UAVaaS) framework, which brings features commonly found in traditional cloud services, such as Infrastructure, Platform, and Software as a Service, to the domain of UAVs. Our work aims to conceptualize and design UAVaaS for commercial applications. Specifically, a cloud-provided orchestration framework that allows multi-tenant UAVs to easily serve multiple heterogenous clients at once and ...


2d Aeroacoustic Analysis Of Flow In The Flame Trench, Meghan Pokorski 2016 Embry-Riddle Aeronautical University

2d Aeroacoustic Analysis Of Flow In The Flame Trench, Meghan Pokorski

Dissertations and Theses

We present here a methodology for using the commercial software ANSYSFLUENT to predict the acoustic field associated with Space-Launch System (SLS). We consider a two-dimensional model of flame deflector, and flame trench. The ANSYS code is then used to simulate the internal flow. Both the steady state case is considered along with other cases where the inflow has a harmonic component. A Ffowcs-Williams Hawking (FWH) surface is then constructed within the computational domain to use the computed flow fluctuations to obtain the acoustic field. The acoustic data was then compared to the experimental data.

When using the ANSYS code for ...


Improved Modeling Of Atmospheric Entry For Meteors With Nose Radii Between 5cm And 10m, Jakob Dale Brisby 2016 University of Tennessee - Knoxville

Improved Modeling Of Atmospheric Entry For Meteors With Nose Radii Between 5cm And 10m, Jakob Dale Brisby

Masters Theses

Atmospheric entry studies typically look closely at the peak heating rate that a body encounters during its trajectory. This is an extremely important phenomenon to study because it allows engineers to determine if a trajectory is possible with given materials and craft design specifications. It also allows designers to choose what type of method will be used for mitigating the enormous heat fluxes during entry. In general, it is accepted that during the super-sonic flight regime the body will continue to be heated and an ablative heat shield often is used to deal with these heating processes. The theory outlined ...


The Design Of A Racing Simulator: A Three-Phase User Testing Approach, Jakob E. Rouleau, Eric J. Wach 2016 Embry-Riddle Aeronautical University

The Design Of A Racing Simulator: A Three-Phase User Testing Approach, Jakob E. Rouleau, Eric J. Wach

Human Factors and Applied Psychology Student Conference

No abstract provided.


Use Of Power Transmission To Uav, Alex Holland, Wilson Lysford, Jens Pearson, Jeremy Straub, Scott Kerlin 2016 Selected Works

Use Of Power Transmission To Uav, Alex Holland, Wilson Lysford, Jens Pearson, Jeremy Straub, Scott Kerlin

Jeremy Straub

With orbital wireless power transmission a distinct future possibility, the consideration and evaluation of possible practical uses becomes very important. While there are many prospective uses for this technology the main focus of this posters is on power transmission in support of Unmanned Aerial Vehicles (UAVs).


Automatic Scheduling For Unmanned Aerial System, Gene Cao, Cody Soderstrom, Jeremy Straub, Eunjin Kim 2016 Selected Works

Automatic Scheduling For Unmanned Aerial System, Gene Cao, Cody Soderstrom, Jeremy Straub, Eunjin Kim

Jeremy Straub

Upper air reports of meteorological data are limited
to PIREPs (Pilot Reports), which require pilots to
actually experience the weather phenomenon, and
radiosondes. Unmanned aircraft systems can reduce
risk and increase data points if they can seek out and
observe these conditions.
Automated scheduling provides a means to generate
and plan the UAS mission, taking into consideration
prioritized tasks.


Autonomous Navigation And Control Of Unmanned Aircraft In The National Airspace, Michael Hlas, Jeremy Straub 2016 Selected Works

Autonomous Navigation And Control Of Unmanned Aircraft In The National Airspace, Michael Hlas, Jeremy Straub

Jeremy Straub

Pilotless aircraft known as Unmanned Aerial Ve-hicles (UAVs) have been used extensively for military and intelligence purposes. This includes situations where the mission area is too dangerous for a pilot to fly, the length of the mission is longer than a pilot could stay awake or aircraft are used as cruise mis-siles that crash into their target. With the decreasing cost and miniaturization of computers, it has become possible to build UAVs that are small and inexpensive making them accessible to businesses, law enforce-ment, hobbyists and the general public.


Automatic Scheduling For Unmanned Aerial System, Gene Cao, Cody Soderstrom, Jeremy Straub, Eunjin Kim 2016 Selected Works

Automatic Scheduling For Unmanned Aerial System, Gene Cao, Cody Soderstrom, Jeremy Straub, Eunjin Kim

Jeremy Straub

Upper air reports of meteorological data are limited
to PIREPs (Pilot Reports), which require pilots to
actually experience the weather phenomenon, and
radiosondes. Unmanned aircraft systems can reduce
risk and increase data points if they can seek out and
observe these conditions.
Automated scheduling provides a means to generate
and plan the UAS mission, taking into consideration
prioritized tasks.


Early Afternoon Concurrent Panel Sessions: Commercial Space Industry Snapshot: Presentation: Small Catapult-Assisted Horizontal-Launch Reusable Rbcc Ssto Spaceplane For Economical Short-Duration Leo Access, Nihad E. Daidzic, 2016 AAR Aerospace Consulting, LLC

Early Afternoon Concurrent Panel Sessions: Commercial Space Industry Snapshot: Presentation: Small Catapult-Assisted Horizontal-Launch Reusable Rbcc Ssto Spaceplane For Economical Short-Duration Leo Access, Nihad E. Daidzic,

Aviation / Aeronautics / Aerospace International Research Conference

This article discusses the conceptual design, flight trajectory calculations, and utilization of the possible future horizontally-launched reusable Single-Stage-to-Orbit (SSTO) spaceplane for small payload short-duration manned/unmanned access to Low-Earth-Orbit (LEO). The 10,000 lb spaceplane would use 5,000 ft catapult-assist horizontal-launch facility and conduct powered approach and landing on conventional horizontal paved runways following the gliding atmospheric re-entry. To increase the economy of operation, the launch facility located at high elevations (4,000+ ft) equatorial region is required, such as, the plateaus in Kenya and Tanzania in Africa and/or Ecuador in South America. A 500-lb payload, including pilot-commander ...


Operational Ndt Simulator, Towards Human Factors Integration In Simulated Pod, Damien Rodat, Frank Guibert, Nicolas Dominguez, Pierre Calmon 2016 Airbus Group Innovations

Operational Ndt Simulator, Towards Human Factors Integration In Simulated Pod, Damien Rodat, Frank Guibert, Nicolas Dominguez, Pierre Calmon

Review of Progress in Quantitative Nondestructive Evaluation

In the aeronautic industry, the performance demonstration of Non-Destructive Testing (NDT) procedures relies on Probability of Detection (POD) analysis. This statistical approach measures the ability of the procedure to detect a flaw with regards to one of its characteristic dimensions. The inspection chain is evaluated as a whole, including equipment configuration, probe efficiency but also operator manipulations. Traditionally, a POD study requires an expensive campaign during which several operators apply the procedure on a large set of representative samples. Recently, new perspectives for the POD estimation have been introduced using NDT simulation to generate data. However, the best approach to ...


Small Satellite Noncommutative Rotation Sequence Attitude Control Using Piezoelectric Actuators, Joshua L. Evans 2016 University of Kentucky

Small Satellite Noncommutative Rotation Sequence Attitude Control Using Piezoelectric Actuators, Joshua L. Evans

Theses and Dissertations--Electrical and Computer Engineering

Attitude control remains one of the top engineering challenges faced by small satellite mission planning and design. Conventional methods for attitude control include propulsion, reaction wheels, magnetic torque coils, and passive stabilization mechanisms, such as permanent magnets that align with planetary magnetic fields. Drawbacks of these conventional attitude control methods for small satellites include size, power consumption, dependence on external magnetic fields, and lack of full control authority. This research investigates an alternative, novel approach to attitude-control method for small satellites, utilizing the noncommutative property of rigid body rotation sequences. Piezoelectric bimorph actuators are used to induce sinusoidal small-amplitude satellite ...


Additive Manufacturing Qualification And Certification For Aerospace And Defense And Space And Missile -- Challenges And Opportunities, Surendra Singh, Robert Hogan, Peter Kantzos 2016 Honeywell Aerospace

Additive Manufacturing Qualification And Certification For Aerospace And Defense And Space And Missile -- Challenges And Opportunities, Surendra Singh, Robert Hogan, Peter Kantzos

Review of Progress in Quantitative Nondestructive Evaluation

Interests in Additive Manufacturing (AM) driven by reduced lead time and costs have motivated industry, academia, and government agencies alike to define roadmaps for defining, developing and documenting qualification and certification processes for AM manufacturing. Substantial developments have been made in many aspect of AM and OEMs are flying non-critical AM parts; though, there are areas such as quality and inspections, both for in-processes and post processes and the qualification and certification that offer significant challenges and opportunities. This becomes even more obvious when dealing with numerous different factors including design intent and materials for different applications. For example, commercial ...


Use Of A Small Unmanned Aerial System For The Sr-530 Mudslide Incident Near Oso, Washington, Robin Murphy, Brittany Duncan, Tyler Collins, Justin Kendrick, Patrick Lohman, Tamara Palmer, Frank Sanborn 2016 Texas A&M University

Use Of A Small Unmanned Aerial System For The Sr-530 Mudslide Incident Near Oso, Washington, Robin Murphy, Brittany Duncan, Tyler Collins, Justin Kendrick, Patrick Lohman, Tamara Palmer, Frank Sanborn

CSE Journal Articles

The Center for Robot-Assisted Search and Rescue deployed three commercially available small unmanned aerial systems (SUASs)—an AirRobot AR100B quadrotor, an Insitu Scan Eagle, and a PrecisionHawk Lancaster—to the 2014 SR-530 Washington State mudslides. The purpose of the flights was to allow geologists and hydrologists to assess the eminent risk of loss of life to responders from further slides and flooding, as well as to gain a more comprehensive understanding of the event. The AirRobot AR100B in conjunction with PrecisionHawk postprocessing software created two-dimensional (2D) and 3D reconstructions of the inaccessible “moonscape” region of the slide and provided engineers ...


Drone Journalism Lab Operations Manual, Matt Waite, Ben Kreimer 2016 University of Nebraska-Lincoln

Drone Journalism Lab Operations Manual, Matt Waite, Ben Kreimer

Faculty Publications, College of Journalism & Mass Communications

This text is a guide for safely conducting drone journalism field work. It takes into account America's current drone regulations, our understanding of the public's acceptance of drones, the state of drone technologies, and our own experiences. The number one goal of any drone journalism operation is safety. At no time should safety be compromised. If there is any doubt, return the drone, also known as an unmanned aerial system (UAS), to the landing zone and terminate the flight. Ethical journalism is responsible journalism, and flying a drone means taking responsibility for the safety of those near you ...


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